Valve



FIG. 1 is a front, top, left-hand side perspective view of a valve showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left-hand side view thereof; and,

FIG. 7 is a right-hand side view thereof.

The broken lines shown in the drawings illustrate unclaimed portions of the valve and form no part of the claimed design. 

CLAIM The ornamental design for a valve, substantially as shown and described. 